Knife sharpener



May 10,1949. J. A. E 2,470,022

KNIFE SHARPEIIER Filed May 10, 1948 '2 Sheets-Sheet 1 Joseph A. De CiccoINVENTOR- J. A. DE CICCO KNIFE SHARPENER May 10, 1949.

2 Sheets-Sheet 2 Filed May 10; 1948 v Joseph A. DeC/cco I N VE NTOR.e03.

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Patented May 10, 1949 UNITED STATES PATENT OFFICE KNIFE SHARPENER JosephA. De Cicco, Callicoon, N. Y.

Application May 10, 1948, Serial No. 26,117

This invention relates to a knife sharpener and has for its primaryobject the provision of a small, handy unit consisting of a sheet ofemery paper shaped. for greater utility, an emery stone, and a leatherstrop all removably and adjustably mounted on a single handled base.

Another object of the invention is to provide a knife sharpener whichremovably carries a number of sharpening surfaces which may be readilyand easily replaced when they are worn or when it is desired to alterthe roughness of the sharpening surfaces.

Yet another object of the invention is to provide a knife sharpenerwhich carries emery cloth or paper in the form of a trough havingrounded sides to permit the sharpening of irregular cutting edges, suchas hook knives, etc.

A further object of the invention is to provide a knife sharpener havinga generally rectangular base, apertured handles secured to the ends ofthe base, a strop removably andresilientlymounted to one portion of thetop surface of the base, an emery stone slidably and removably mountedto another portion of the top surface of the base, and emery paper orcloth also slidably and removably secured to the bottom surface of thebase.

These, together with various ancillary objects and features of theinvention which will later become apparent as the following descriptionproceeds, are attained by the device, a preferred embodiment of whichhas been illustrated by way of example only in the accompanyingdrawings, wherein:

Figure 1 is an isometric view of the entire knife sharpener in assembly;

Figure 2 is a longitudinal vertical sectional view of the sharpener;

Figure 3 is a transverse sectional view taken substantially on the planeof the section line 3-3 of Figure 2;

Figure 4 is another transverse sectional view taken substantially on theplane of the section line 44 of Figure 2;

Figure 5 is another transverse sectional view taken substantially on theplane of section line 5-5 of Figure 2;

Figure 6 is an isometric view of the emery cloth or paper;

Figure 7 is an isometric view of the emery stone; and

Figure 8 is an isometric View of the strop unit.

Specific reference is now made to the drawings. In the several views,similar reference characters indicate corresponding elements throughout.

5 Claims. (Cl. 51-481) Indicated generally at H] is a base, preferably arectangular wooden block; to either or both sides of which are afiixed apair of handles [2 having vertical apertures l4 for mounting the base onsuitablelugs if desired.

Removably secured transversely to the top surface of the base at oneportion thereof by means of screws l6 and I8 are a pair of spaced,generally U-shaped supports 20 and 22. One of the legs of the support 20is provided at its top edge with an open, generall U-shaped slot 24,while one of the legs of the support 22 is provided with an integraltransverse lip 26 having an open, generally U-shaped slot 28.

As shown in Figure 8, a leather strop 30 is provided transverse the endsof which are suitably secured a pair of clamps or retainers 32 and 34,preferably made of metal. Welded to the clamp 34 is a longitudinalfinger 35 carrying a head 38, while to the clamp 32 is welded alongitudinal threaded finger 40 which carries an internally threadedsleeve 42 preferably a wing nut. As shown in Figures 1 and 2, the stropis positioned on the base by slipping the finger 36 into the slot 28while the finger 40 is slipped into the slot 24. By tightening the nut42, the strop is stretched tautly across the supports 20 and 22.

Frictionally retained to the sides of the base 10 beneath the supports20 and 22 and extending longitudinally of the base, a pair of metallicstrips 44 and 46 are provided the tops of which are bent to producehorizontal longitudinal lip portions 48 and 5B. The bottoms of thestrips 44 and 46 are bent to produce upwardly and outwardly inclinedlongitudinal lips 52 and 54 which as will be explained later serves toslidably retain the emery cloth or paper. To the lip portions 48 and 50immediately in front of the support 22 is secured, as by welding, a pairof strips 56 and 58 which are upwardly and inwardly inclined and serveto slidably retain the emery stone 60 therebetween. As shown in Figure7, the emery stone is in the form of a substantially rectangular blockhaving longitudinal, generally V-shaped, side grooves 52 and 64 whichare engaged by the strips 56 and 58, respectively. The emery stone maybe provided with diiferent abrasion faces so that the stone may bereversed if desired.

Secured by means of tacks 66 to the bottom surface of the base is alongitudinal piece of felt or rubber 68. Beneath the felt or rubber apiece of emery paper or cloth I0 is slidably retained by the lips 52 and54. The construction of the emery paper or cloth is shown in Figure 6.It is generally in the form of a trough the inner sur- 3 face of whichis smooth, the outer surface of which is abrasive. The sides 12 and 14of the emery paper have integral downwardly and outwardly inclined lipportions 16 and 18. To the lips 76 and '18 are secured a pair oflongitudinal metallic, generally U-shaped strips 88 and 82.

In View of the foregoing description taken in conjunction with theaccompanying drawings it is believed that a clear understanding of thede vice will be quite apparent to those skilled in this art. A moredetailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shownand described (a preferred embodiment of the invention the same issusceptible to certain changes fully comprehended by the spirit of theinvention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A knife sharpener comprising a base, a strop, means for removably andresiliently securing the strop to the base, an emery stone, means forslidably and removably supporting the emery stone on the base, emerypaper, and means for slidably and removably securing the emery paper tothe base.

2. A knife sharpener comprising a rectangular base, apertured handlessecured to the ends of the base, a strop, means for removably andresiliently securing the strop to the top surface of the base, an emerystone, means for slidably and removably mounting the emery stone on thetop surface of the base, emery paper, and means for slidably andremovably securing the emery paper to the bottom surface of the base,said strop securing means including a pair of supports securedtransversely of the top surface of the base having slots in eachsupport, and means carried at the ends of the strop for adjustablyengaging the slots provided in the supports.

3. The combination of claim 2, wherein said slot engaging means includesa first clamp secured transversely to one end of the strop, a fingerhaving a head thereon secured to the clamp disposed longitudinally ofthe strop for engageably receiving one of the supports through the slotprovided therein, a second clamp secured transversely to the other endof the strop, a threaded finger secured to the clamp disposedlongitudinally of the strop for engageably re- '4 ceiving the othersupport through the slot pro vided therein, and an internally threadedsleeve on the threaded finger for tightening the strop across thesupports.

4. A knife sharpener comprising a rectangular base, apertured handlessecured to the ends of the base, a strop, means for removably andresiliently securing the strop to the top surface of the base, an emerystone, means for slidably and removably mounting the emery stone on thetop surface of the base, emery paper, means for slidably and removablysecuring the emery paper to the bottom surface of the base, said emerypaper being in the form of a trough having longitudinally disposeddownwardly and outwardly inclin'ed lip portions, and said means forslidably and removably retaining the emery paper on the bottom surfaceof the base includes a pair of longitudinal upwardly and outwardlyinclined strips secured to the base for slidably engaging the lipportions of the emery paper.

5. A knife sharpener comprising a rectangular base, apertured handlessecured to the ends of the base, a strop, means for removably andresiliently securing the strop to the top surface of the base, an emerystone, means for slidably and removably mounting the emery stone on thetop surface of the base, emery paper, means for slidably and removablysecuring the emery paper to the bottom surface of the base, said emerystone being a substantially rectangular block having longitudinal,generally ll-shaped side grooves, and 'said emery stone securing meansincludes spaced longitudinal strips carried by said base having upwardlyand inwardly inclined lip portions for engageably receiving saidV-shaped side grooves.

JOSEPH A. DE CICCO.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 785,264 Maier Mar. 21, 1905787,304 Maier Apr. 11, 1905 816,599 Pippy Apr. 3, 1906 1,257,078 GibfordFeb. 19, 1918 1,350,884 Rogowski Aug. 24, 1920 1,425,446 Brown Aug. 8,1922

